Invention Grant
- Patent Title: Method for manufacturing nonaqueous electrolyte secondary cell, and cell assembly
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Application No.: US15226061Application Date: 2016-08-02
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Publication No.: US09768470B2Publication Date: 2017-09-19
- Inventor: Hiroshi Yamasaki , Tatsuya Hashimoto
- Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Toyota-shi, Aichi
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota-shi, Aichi
- Agency: Sughrue Mion, PLLC
- Priority: JP2015-153691 20150803
- Main IPC: H01M10/0568
- IPC: H01M10/0568 ; H01M10/0525 ; H01M4/133 ; H01M4/583 ; H01M10/44

Abstract:
Provided is a method for manufacturing a nonaqueous electrolyte secondary cell which can maintain and demonstrate an excellent cell characteristic over a long period of time. The method for manufacturing a nonaqueous electrolyte secondary cell provided by the present invention includes: a step of preparing a positive electrode having a positive electrode mix layer and a negative electrode having a negative electrode mix layer; and a step of housing the positive electrode and the negative electrode together with a nonaqueous electrolytic solution in a cell case. The nonaqueous electrolytic solution includes a Compound (I) constituted by lithium tris(oxalate)phosphate. When a BET specific surface area of the negative electrode mix layer is denoted by X (m2/g) and the amount of the Compound (I) added to the entire amount of the nonaqueous electrolytic solution is denoted by Y (% by mass), the following relationships are satisfied: 3≦X≦4.3; 0.4≦Y≦1.5; and (Y/X)≦0.35.
Public/Granted literature
- US20170040641A1 METHOD FOR MANUFACTURING NONAQUEOUS ELECTROLYTE SECONDARY CELL, AND CELL ASSEMBLY Public/Granted day:2017-02-09
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